210201211110021 has 8 divisors (see below), whose sum is σ = 280268541497760. Its totient is φ = 140134010731152.

The previous prime is 210201211109987. The next prime is 210201211110029. The reversal of 210201211110021 is 120011112102012.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 210201211110021 - 2¹⁸ = 210201210847877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210201211110029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28664911 + ... + 35243148.

It is an arithmetic number, because the mean of its divisors is an integer number (35033567687220).

Almost surely, 2^{210201211110021} is an apocalyptic number.

It is an amenable number.

210201211110021 is a deficient number, since it is larger than the sum of its proper divisors (70067330387739).

210201211110021 is a wasteful number, since it uses less digits than its factorization.

210201211110021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65004435.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 210201211110021 its reverse (120011112102012), we get a palindrome (330212323212033).

The spelling of 210201211110021 in words is "two hundred ten trillion, two hundred one billion, two hundred eleven million, one hundred ten thousand, twenty-one".